Automatic die press



Dec. 19, 1922. 1,439,607.

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HUN? 26 m III! Patented Dec. 19, 1322,

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AUTOMATIC nr'n Panes.

' Application fiieda rn 27-,

1 0 all whom it may concern -Be it known that FREDERICK CoA'rEs, a citizen of the United States, residing at- Cincinnati, in the county of Hamilton and State of Ohio, has invented certain new and useful Improvements in Automatic Die Presses, of which the following is a specification.

This invention relates to the manufacture of paper cartons or cans and has special reference to a die-press for forming the end closures of such cartons or cans.

(lne important Object of the invention is to provide an improved device *wherein blanks may be-placed successively and which will properly form said blanks automatically.

A second important object of the invention is to provide an improved form of such device wherein the blanks for the end closures may be placed in a plastic or wetvstate and, while under the action of the dies, dry in good shape.

A third important object of the invention is to provide an improved means for successively operating a series of forming dies.

With the above and other objects in view, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed, M

In the accompanying drawings, like characters of reference indicate like parts in the several views, and

Figure 1 is a plan view of the invention, certain of the parts being broken away to better disclose the construction.

Figure 2 is a side elevation similar to Figure 1.

Figure 3 is an inverted perspective view of a certain cam ring used herewith.

Figure 4- is' a section on the line l-: of Figure 3.

'Figure 5 is a section on the line 5 Figure 3. I

In carrying out this invention there is provided a base whereon is mounted spaced bearings 11 in which a shaft 12 is journalled. Extending upwardly from the corners of the base 10 are posts 13 and centrally disposed of the base is a vertical shaft 14 carrying a worm wheel 15 which meshes with a worm 16 fixed on the shaft 12. The shaft 12 is provided with a pulley 17 or F, a s e that application is shown 1n the present case 1921. Serial No. 464,837.

arelocated a series of female dies 20 whilebrackets 21 fixed to the reduced portion 19 of the carrier, support sleeves 22 wherein slide tubular die supports 23 in each of which also slides a plunger 24: the die supports and plungers being arranged concen "trically.

The construction of the dies used herewith is fully andparticularly described in: my copending application, filed the 27th day of April and bearing the Serial Number The outer or annular male die of at 2e-and the spring of the application which normally holds the dies raised is shown at 25' in this application.

13 is a 'oam ring 26 which is of the same thickness throughout about one-fourth of its length so as to provide a cam surface2'7 for depressing the'respective die carrier and plunger 23 and 2a; The remaining quarter of this die ring has afcentral portion 28 reduced in thickness to permit carriers and *plungers 23 and 24 to use It will be seen thatthe dies travel in the direction of the arrow 29in Figure 2 and that between surface 23 and the surface 27 there is provided a centrally: disposed inclined cainsurfacc 29'term'1nat1ng in a flat cam surface 30 in the same plane as'the surface 27 and there is also disposed aparr of lateral inclined" cam surfaces 31, the parts being so arranged that the plunger 24 of each die will engage the cam surface 29 and move up'said cam surface after which rollers 32 mounted on the die carrying a cylinder 23 will engage the surface 31. -Thus as the carrier or head 18-rotates it causes the male die to revolve about the axis of the shaft lei and, as each :die reaches "the inclined surfaces 29' and 31 the central plunger :wlll first be depressed supported 011 the upper ends of the: posts the outer member 23 is first permitted to rise and then the member 24 will rise.

In operation the attendant places a blank in its plastic state on the open die, positioning said blank by means of the stop pins As a die revolves about the shaft 14: the male die comes down and forms the carton closure. When the dies again reach the portion 33 and st of the cam the male dies rise.

The operator then removes the formed blank and places a fresh blank in the die. it is to be noted that through about onehalf of the movement of these dies they receive heat from a gas burner 86 so that during the movement oi the dies fixed to this burner they are heated up and dry out a plastic formed closure.

There has thus been provided a simple and eflicient device 01" the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is wished to include all such as properlycome within the scope claimed.

Having thus described the invention, what claimed as new, is

l. in a machine of the class described, a rotary die carrier, means to rotate said carrier, dies fixed to said carrier in series adjacent the periphery of the carrier, other dies movably mounted on and bodily,' movable with said carrier, each of said other dies including inner and outer concentric members arranged in axially alined operative relation to a respective die of the first series, a fixed cam track around which said second dies travel, said cam track being provided with cam surfaces arranged to pri marily actuate the inner member and thereafter actuate the outer member and close the members successively on the respective first die, said cam ring also having cam surfaces arranged to permitrelease of the outer and inner die members in the order named, said cam surfaces being arranged to act directly and'without eccentric thrust on said inner and outer members and sarin means constantly holding the second die members in engagement with the cam ring.

2. In a machine of the class described, a

rotary die carrier, means to rotate said car rier, dies fixed to said carrier in series adjacent the periphery of the carrier, other dies movably mounted on and bodily movable with said carrier, each of said other dies including inner and outer concentric members arranged in axially alined operative relation to a respective die of the first series, a fixed cam track around which said second dies travel, said cam track being provided with cam surfaces arranged to primarily actuate the inner member and thereafter actuate the outer member and close members successively on the respective first die, said cam ring also having cam surfaces arranged to permit release of the outer and inner die members in. the order named, said cam surfaces being arranged to act directly and without eccentric thrust on said inner and outer members, means constantly urging the second die members toward the cam ring, and means to heat the dies throughout a predeterminedportion of their path or' travel, said means comprising an arcuate gas pipe extending concentrically to and embracing substantially one-half of the path of said dies.

3. In a machine of the class described, a rotary die carrier, means to rotate said car rier, dies fixed to said carrier in series adjacent the periphery of the carrier, other dies movably mounted on and bodily. movable with said carrier, each oi. said other dies including; inner and outer concentric members arranged in axially alined operative relation to a respective die of the first series, a fixed cam track around which said second dies travel, said cam track being provided with cam surfaces arranged to primarily actuate the inner member and thereafter actuate the outer member and close the members successively on the respective tirst die, said cam ring'also having cam surfaces arranged to permit release of the outer and inner die members in the order named, the cam surfaces actuating the inner member being arranged centrally of the ring and the cam surfaces actuating the outer member being arranged at the inner and outer side portions of the ring, said outer memher being provided with rollers bearing on the last mentioned cam surfaces, and spring means constantly holding the second die members in engagement with the cam ring.

l1] testimony whereof I afiix my signature.

FREDERICK CORTES. 

